Sunan Ibn Majah, Chapter: The Chapters on Etiquette

that the Messenger of Allah (saw) said: "On the Day of Resurrection, people will be lined up in rows, (one of the narrators) Ibn NUmair said: i.e., the people of Paradise, and a man from among the people of Hell will pass by a man (from the people of Paradise) and say: 'O so and so! Do you not remember the day when you asked for water and I gave you water to drink?" So he will intercede for him. And another man will come and say: " Do you not remember the day when I gave you water with which to purify yourself?" and he will intercede for him." (In his narration, one of the narrators) Ibn NUmair said: "And he will remember the day when you sent me to do such and such for you, and I went and did it for you?' and he will intercede for him." "